Infarto agudo de aurícula y ventrículo derechos

Vargas-Barrón, Jesús; Romero-Cárdenas, Ángel; Roldán, Francisco Javier; Vázquez-Antona, Clara

doi:10.1016/s0300-8932(07)74985-0

Cited by 4 publications

(1 citation statement)

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“…The RV has a triangular base with a thin crescentic free wall and is designed as a volume pump, ejecting into the lower-resistance pulmonary circulation. Although the cardiac output is the same for both ventricles, the muscle mass of the RV is about one-sixth that of the left ventricle, and it performs one-fourth of the stroke work [ 31 – 33 ]. The RV, with its thinner wall and lower operating pressures, has a systolic-diastolic coronary blood flow ratio that is much greater than that of the LV [ 34 ].…”

Section: Discussionmentioning

confidence: 99%

Assessment of Left and Right Ventricular Diastolic and Systolic Functions Using Two-Dimensional Speckle-Tracking Echocardiography in Patients with Coronary Slow-Flow Phenomenon

Wang

Zhang

et al. 2015

PLoS ONE

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ObjectiveCoronary slow-flow phenomenon (CSFP) is an angiographic diagnosis characterised by a low rate of flow of contrast agent in the normal or near-normal epicardial coronary arteries. Many of the patients with CSFP may experience recurrent acute coronary syndromes. However, current clinical practice tends to underestimate the impact of CSFP due to the yet unknown effect on the cardiac function. This study was performed to evaluate left ventricular (LV) and right ventricular (RV) diastolic and systolic functions, using two-dimensional (2D) longitudinal strain and strain rate, in patients with CSFP, and to determine the relationships between the thrombolysis in myocardial infarction (TIMI) frame count (TFC) and LV and RV diastolic and systolic functions.MethodsSixty-three patients with CSFP and 45 age- and sex-matched controls without CSFP were enrolled in the study. Diagnosis of CSFP was made by TFC. LV and RV diastolic and systolic functions were assessed by 2D speckle-tracking echocardiography.ResultsLV peak early diastolic longitudinal strain rate (LSRe) was lower in patients with CSFP than in controls (P = 0.01). LV peak systolic longitudinal strain (LS) and LV peak systolic longitudinal strain rate (LSRs) were lower in patients with CSFP than in controls (P = 0.004 and P = 0.03, respectively). There was no difference in LV ejection fraction. RV peak early diastolic longitudinal strain rate (RSRe) was lower in patients with CSFP than in controls (P = 0.03). There were no differences in RV peak systolic longitudinal strain (RS), RV peak systolic longitudinal strain rate (RSRs), or RV fractional area change among the groups. The mean TFC correlated negatively with LSRe and RSRe in patients with CSFP (r = −0.26, P = 0.04 and r = −0.32, P = 0.01, respectively).ConclusionsLV diastolic and systolic functions were impaired in patients with CSFP. CSFP also affected RV diastolic function, but not RV systolic function.

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Section: Discussionmentioning

confidence: 99%